Separable fastener



Jan. 8, 1924..

F. S. CARR SEPARABLE FASTENER Filed Dec. "2, 1921 Invenior: 2b FreaGS. Cami,

Patented Jan. 8,1924.

UNITED STATES 1,480,532 PATENT OFFICE.

FRED S. CARE, OF NEWTON, MASSACHUSETTS, ASSIGNOR .TO CARR FASTENER COM,- PANY, OF CAMBRIDGE, MASSACHUSETTS, A CORPORATION OF MAINE.

SEPARABLE rAsrnnna.

Application filed December 2, 1921.- Serial No. 519,384.

To all whom it may concern: Be it known that I, FRED S. CARR, a citizen of the United States, and resident of Newton, in the county of Middlesex, State of Massachusetts, have invented an Improvement in Separable Fasteners, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts. I v

The invention pertains to improvements in separable fasteners. It is among the objects of the invention to provide a separable fastener in which the stud and socket are' positively locked against separation except pursuant to a desired manipulation, and in which a very short stud may be used.

In the drawings, which show a preferred form of one embodiment of my invention Figure 1 is a vertical central section through a preferred-form of fastener, being partly in elevation;

Fig. 2 is a section on the line 2-2 of Fig. 1;

Fig. 3 is a section on the line 22 of Fig. 1, showing the position of the parts pursuant to that manipulation which permits separation of stud and socket; and

Fig. 4 is a side elevation of a part of the fastener illustrated in Fig. 1, and is more fully described hereinafter.

Referring to the drawings and to the preferred form of my invention selected for illustrative purposes, I have shown a stud including a head 5, a neck 6, and a shank portion 7 secured to a stud-carrying part 8, which may be a portion of the body of a motor car or the like. Between the head 5 and neck 6 of the stud is preferably provided, as illustrated, a relatively abrupt shoulder 9. The preferred form of socket illustrated is secured to socket-carrying fabric 10, which may be a motor car curtain, and includes a casing 11 containing a spring 12 having jaw portions 13, and 14 adapted resiliently to underlie the head 5 of the stud by entering the neck 6 behind the shoulder 9 of the stud. In the preferred form of spring illustrated, resiliency is provided to the aws 13 and 14 by forming the spring 12 of spring sheet metal and cutting away an almost complete annular portion 15 and by slotting the spring at 16 from the stud-receiving aperture therein to connect with this annular cut-away portion 15. Op-

posite the slot 16, the spring is slotted at 17 from thestud-receiving aperture to the periphery of the spring. In the form of my invention illustrated, the spring 12 is held in the casing 11 by the closure plate 18 (Fig. 1), which, provides a spring-locating lug 19, extending into the slot 16 in the spring 12. The casing 11 is preferably, as illustrated, provided'withprongs 20 adapted to penetrate the curtain 10 and to be clenched within a guiding and securing-part on the outside of the'curtain 10, this securing part including a cover plate'21, anvil plate 22 and clench plate23. The socket-securing part is apertured to receive a manipulatory portion 24, which may begenerally cylindrical and which maybe provided with projecting means typified by the 'lug'25 extending into the slot 16 of the spring 12. The cylindrical'portion 24 maybe held in position'in any suitable way, typified by the lugs 26 which may underlie portions-of M the closure plate 18.

The mechanism described constitutes a preferred form of fastener in which a relatively short stud is adapted to be engaged by jaw means located on the same side of the socket-carrying fabric or curtain as the'stud, while providing for manipulation of the jaw means from a part projectingthrough the curtain and located on the outside of the curtain on the side thereof opposite the stud.

When the manipulatory part 24 is turned relative to the socketcasing, the lug 25 will press against the adjacent face of the spring in a direction opposite to the spring-locating lug 19, and these two lugs will spread the jaws 13, 14 so that they will no longer underlie the head 5 of the stud. The stud-releasing movement of the jaws on the side pressed by the lug 25 will be directly actuated by the lug 25, while the corresponding stud-releasing movement of the opposite jaw will re sult from the shifting of the. spring about the fixed lug 19 as a fulcrum. In the preferred form of my invention illustrated, it

the socket casing, including, the spring, will be moved outwardly away from the stud so that, if the manipulatory part is again released, the jaws 13, la will not again enter the neck of the stud behind the head thereof.

The operation of the fastener herein described is very similar to those illustrated in my co-pending application Serial No. 519,381, filed herewith, December 2nd, 1921, the 'major structural change being in the mechanism for spreading the jaws to release thestud. While this structural change is small, the separation of the stud-engagin jaws to release the stud is effected in a s11 stantially different way.

; and reversal of parts, and even changes in the mode of operation, may bemade without departingfr'om the scope of my invention, which is best defined in the following claims.

Glaimsz' I -1;'Aj separable fastener comprising, in

1 combination, a stud having a head and a neck, and a socket comprising a casing, a

spring providing two stud-engaging jaws connected by the body of the spring, a stationary part projecting between portions of stationary part and acting to move one end 1 of one jaw away fromthe stud while moving the opposite end of the second jaw about said stationary part as a fulcrum in a direction to separate said jaws from the neck of the stud, the portions of said spring at the side thereof opposite said stationary part being free to swing toward said Sta-i tionary part during separation of said jaws.

2. A fastener comprising, in combination, a stud having a head anda neck, a socket including a casing, two jaws for engagement with the neck of said stud, spring means urging said jaws toward said neck of said stud, manipulatory means having associated therewith a projection entering between said jaws, said casing providing an opposingpart entering between said two jaws, said casing, projection and opposing part providin for-swinging of said jaw means away from said neck of said stud with attendant oscillatory movementofsaid spring, the portions of said springat the side thereof'opposite said stationary part being free to swing toward said stationary part during separation of said jaws.

In testimony whereof, I have signed my name to this specification.

FRED S. CARR, 

